Erik gustaf nicolaus salenius



S R m NC EA LM L A m H m m EC (No Model Patented Dec. 28,1897.

W/TNESSES OLZMQQQOM,

UNITE STATES PATENT @rrrcn.

ERIK GUSTAF NIOOLAUS SALENIUS, OF ALBANO, SI/VEDEN, ASSIGNOR TO THE AKTIEBOLAGET RADIATOR, OF SAME PLACE.

CENTRIFUGAL MACHINE.

SPECIFICATION forming part of Letters Patent No. 596,338, dated December 28, 1897.

Application filed July 8,1897. Serial No. 648,798. (No model.) Patentedin Sweden January 15,1895, No. 6,765,- in Germany September 20,1895,N0. 92,828,- in England November 26,1895,N0. 22,599; in France November 2'7,1895,N0. 252,026,

and in Denmark November 24, 1896, N0- 874:.

To all whom it may concern:

Be it known that I, ERIK GUSTAF NICOLAUS SALENIUs, a subject of the King of Sweden and Norway, residing in Kraftriket, Albano, in the Kingdom of Sweden, have invented certain new and useful Improvements in Drums for Centrifugal Machines, (for which patents have been granted in Sweden, No. 6,765, dated January 15, 1895; in Denmark, No. 874, dated by stamping and spinning them up from plates or hollowing them out from a solid piece. As the drum-wall must, with this construction, be quite thick?v in order to stand the strain the drum is quite heavy.

The object of my invention is to produce a drum for this purpose whichshall be, as

compared with those above described, light,

strong, and less costly.

In carrying out my invention I construct the body of the drum from rings of metal tubing laid closely together and secured together for strength, and to close the joints by soldering, brazing, or the like. The tubing used may be of any sufficiently ductile metal, as steel or copper, for example.

In the accompanying drawings I have illustrated two embodiments of my invention.

Figure 1 is a vertical axial section of a drum with two chambers having its side walls formed of rings of continuous spirallylaid tube or pipe supported on a bottom made from a plate of metal, and Fig. 2 is a similar sectional view of a drum having both its bottom and side walls formed of endless rings of tubing. Figs. 3 and 4 show sections of the tubing that may be used.

Referring first to Fig. 1, 1 represents a circular bottom fixed on a, spindle 2. On this bottom is mounted the drum-wall, formed of rings of spiral tubing 8, the base-ring being secured to the bottom 1 and the closely-laid rings being secured together by solder 4:. The drum may have almost any contour desired. In Fig. 1 it is formed with upper and lower compartments A and B.

In the construction of Fig. 2, which shows a drum having but one compartment, the bottom 1, which may be concave or flat, is formed of tubing 3 as well as the side walls, and the tubing is in the form of endless rings laid close together and soldered or brazed together, as explained with reference to Fig. 1.

In the figures the tubing is represented as circular in cross-section, as this is the more common form and it serves my purpose; but the tubing may have other sections, as indicated in Fig. 3, and there may be more than one tier of tubing, as indicated in Fig. 4.

A drum constructed in the manner described is relatively very light and strong, and owing to the perfected modes of making such tubing as would be required and the simplicity of the construction the cost of production of the drums is less than by the present known methods.

It will be understood that in my construction the wall of the drum is formed of the rings of tubing, the metal used for securing them together and closing the joints being merely incidental to the construction. I am well aware that it is a common practice to surround a metal vessel with a coil of tubing through which to pass hot or cold liquids for heating or refrigerating purposes, and also that it has been proposed to cast such a coil in the metal forming the wall of the vessel; but this has no relation to my invention. In my construction no passage for fluid is provided in the tubing. Indeed, the structure may as well be composed of a series of endless rings not connected to form a continuous passage.

Having thus described my invention, I claim- 1'. A drum for a centrifugal apparatus having its walls composed of metal tubing in suing its walls composed wholly of tubing arranged in substantially horizontal, superposed tiers, said tubing being closed at its ends and the superposed tiers secured together by brazing, substantially as set forth.

In witness whereof I have hereunto signed my name in the presence of two subscribing 20 witnesses.

ERIK GUSTAF NICOLAUS SALENIUS.

Vitnesses:

ERNST SVANGVIST, E. HERMANSSON. 

